Bowling pinfall totalizer



Sept. 24, 1968 J. A. RUSSELL BOWLING P INFALL TOTALI Z ER Filed April 22, 1965 2 Sheets-Sheet 1 u h. q

ik T u f Q d K@ ma ya Y, N ,S@ M Lg@- @l U INVENTOR. jaeu? 2 Sheets-Sheet 2 Filed April 22, 1965 Pre PFA?

United States Patent 3,402,930 BOWLING PINFALL TOTALIZER Jack A. Russell, Muskegon, Mich., assignor to Brunswick Corporation, a corporation of Delaware Filed Apr. 22, 1965, Ser. No. 450,099 20 Claims. (Cl. 273-54) ABSTRACT F THE DISCLOSURE An apparatus for counting bowling pinfall from pinfall information available as a plurality of changes in electrical signals one such change corresponding to the position of a pin at each of a plurality of pin positions including a differential unit having a single power output and a plurality of power inputs one for each pin position and connected to the output, and motor means for each pin position for actuating the respective power input in response to a change in the electrical signal at the respective pin positions.

It has been proposed to provide a scoring system which is capable of scoring bowling games for bowlers. Such a system receives pinfall information and totalizes the information, converts the pinfall totals into score values and awards the score values to the bowler. A complete scoring system, which is capable of receiving pinfall totals or pin count from a totalizer and converting the totals to bowling score values, storing score values, printing first and second ball scores and frame scores as Well as other scoring symbols, providing team totals and playerby-player subtotals, etc., is disclosed by Cornell et al. in application Ser. No. 366,297, entitled Automatic Bowling Scorer, filed May ll, 1964, and assigned to the common assignee of this application. The Cornell et al. scoring system is capable of servicing a multiplicity of players bowling on a plurality of lanes. In that system, as it may be in other systems, it is necessary to totalize pinfall information received in terms of individual signals from pin detection means to provide a total pin count for each ball which can be translated by a computation unit and control portion of the system into score values for awarding scores to one or more bowlers. In the Cornell et al. system, the computation unit is basically a mechanical computer and the pin count input received by the computer is mechanical. Therefore, it is highly desirable to provide a pinfall summer or totalizer for converting the individual pinfall signals into a total pin count, where the total pin count is expressed as a mechanical output which can be used as an input to a mechanical computer.

It is a general object of this invention to provide a new and useful scoring system or apparatus of the character described.

A further object is to provide a scoring system including a new and useful totalizer for translating pinfall information into pin count.

Another object is to provide a pinfall totalizer or summer which includes a differential unit having an input for each pin position connected to a common power output which is capable of being fed as a mechanical input to a mechanical computer.

Still another object is to provide a pinfall totalizer or summer according to the last mentioned object in which the differential unit includes two opposing offset series of pulleys and a cable grounded at one end, extending through the pulleys in a zigzag path alternating between pulleys of the two series, and having a free end as the common output, and where the inputs each include an actuable solenoid for driving a separate one of the pulleys a preset distance in a direction away from the opposing series of pulleys.

rice

Other objects will be apparent from the following description and the drawings in which:

FIG. 1 is a schematic plan of a scoring system for use in association with a plurality of bowling lanes;

FIG. 2 is a plan view of the pinfall totaling device used in the system of FIG. l;

FIG. 3 is a side view of the device of FIG. 2;

FIG. 4 is an enlarged portion of FIG. 2 showing elements in more detail; and

FIG. 5 is a wiring diagram for the scoring system of FIG. l.

While this invention is susceptible of embodiment in many different forms, there is shown in the drawings and will herein be described in detail a specific embodiment of the invention with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention and is not intended to limit the invention to the embodiment illustrated.

Referring first to FIG. l, the illustrated scoring system includes a totalizer T which is capable of receiving pinfall information through control lines such as electric cables PFI from a plurality of automatic pinsetters APL and APR, totalizing the pinfall information and sending a pinfall total or pin count signal in the form of a mechanical output PC to a computation and control unit, i.e. computer C. The mechanical output PC functions as a mechanical input to a mechanical computer portion of computer C.

In the scorer system illustrated, each of the automatic pinsetters APL and APR contains a triangular array of ten pin detection switches PDS (FIG. 5) and each contains a pinfall-ready switch AP (FIG` 5), designated AP90L and AP90R respectively. The pin detection switches PDS generate the pinfall information which is sent by cables PFI to the totalizer T. Electric cables PFI include individual wires from each PDS switch. The pinfall-ready switches AP90L and AP90R generate pinfallready signals sent to the computer through wires of cables PFR to identify to the computer C the automatic pinsetter APL or APR from which the pinfall information is being sent to the totalizer T. The operation of the PDS and AP90 switches in the pinsetters APL and APR is fully described by Cornell et al. in the above-mentioned application, Ser. No. 366,297. The computer C is capable of receiving the pinfall-ready signals from the pinsetters and the pin count signal from the totalizer on a ball-byball basis, comparing the signals, and properly awarding score values representative of the pinfall. The illustrated computation and control unit, or computer C, and attentive equipment, and its operation, is also fully described by Cornell et al. and will not be discussed herein in detail.

Referring to FIGS. 2 through 4, totalizer T includes a differential unit. In the form of differential unit shown, each of pulleys P-l through P-10 is offset relative to each next adjacent pulley. An elongated flexible member, shown as a cable or tape and designated PC, constitutes the output from the totalizer and from the differential unit. Each pulley P is movable to a position an equal limited distance removed from its normal or rest position (shown in full lines in FIG. 2) by the action of motor means provided in the form of a separate push solenoid M for each respective pulley. Push solenoids M are identified as M-1 through M-10 for moving the respective pulleys P-l through P-10. Each pulley and solenoid combination functions as a separate input for the differential unit.

The cable PC is anchored at one end and extends in a zigzag path to engage each pulley. The direction of movement of each pulley by its respective solenoid M and the engagement of the cable PC with each pulley P are such that, as each pulley P is moved its equal limited distance away from rest position by the respective solenoid M, the portion of cable PC extending from the last pulley P-li) is moved or pulled one unit lengthwise into the differential unit. As additional solenoids M are energized, the cable PC is pulled an additional equal unit lengthwise for each solenoid energized, thereby giving additive output in lengthwise movement of cable PC for each input actuated by energization of a solenoid M. Each solenoid M and each input for the differential unit is energized or actuated responsive to the pin condition, i.e. a pin fallen condition, at the respective pin position as detected by operation of the pinsetter and a change in electric signal from the respective switch PDS.

Considering the totalizer illustrated in FIGS. 2 through 4 more specically, totalizer T includes a frame 14 which supports the components of the differential unit. T-he push solenoids M-1 through M-10, one for each pin position of a tenpins setup, are mounted on frame 14. Solenoids may be substituted for magnets M-1 through M-l() in the wiring diagram of the control system of Cornell et al., identified above, e.g. as has been done in FIG. 5 herein. A plurality of levers L-1 through L-10 is provided, one for each pin position, each pivotally mounted by pivot bolts and bushings, as indicated at 15, to the casing or mounting of one of solenoids M. The push rod 16 of eac-h solenoid M-l through M- abuts a downwardly projecting flange 17 on a projection of the respective lever L-l through L-10.

A pin 18 pivotally mounts each of pulleys P-l through P-10 on the respective lever L-l through L-10 so that the pulley is carried by the lever and is free to rotate relative to the lever. Each pin 18 includes a reduced threaded portion 21 at one end, a widened hexagonal wrench receiving portion 22 near the other end, and a spring anchor groove Z3 beyond portion 22. The pin 18 extends downwardly through the center of the pulley P, through a spacer 24 and a bore in lever L and receives a nut 20 securing the pin 18 upright with the pulley P free to rotate thereon.

Each lever L has a hook 25 (FIG. 4) at one end which is properly offset or bent to a higher level from the remainder of the lever for receiving a reduced central portion of a spacer 24 mounted with a pulley on an adjacent lever L. It will be noted, especially with reference to FIGS. 2 and 3, that the levers L are arranged in pairs with the hook 25 of each lever of each pair receiving the spacer 24 secured to the other lever L of the pair. The hook 25 is larger than the received portion of spacer 24 and is shaped so that, regardless of the position of spacer 24 within hook portion 25, one unit of distance remains between spacer 24 and a portion 25a of the inner edge of hook 25 with spacer 24 in a normal or rest position (shown for levers L-3 and L-4 in FIG. 4) against the opposite portions 25h.

When the solenoid M associated with the corresponding lever L is actuated, the push rod 16 pushes against flange 17 pivoting lever L clockwise about pin 15, moving spacer 24 one unit to a pulling position against edge 25a. As both solenoids of a pair, e.g. M-l and M-2, are actuated, both spacers 24 are carried to pulling position against the edge portions 25a of the paired levers (shown for levers L-1 and L-2 in FIG. 4). A separate tension spring 26 is attached at its ends to the anchor grooves 23 of the pins 18 on levers L of each pair of levers L, thereby biasing the spacers 24 to their rest position against portion 25b of the inner hook edge. Thus, deenergization of a solenoid permits return of the spacer 24 on the corresponding lever to its rest position by spring 26.

Where one solenoid, e.g. M-4, is energized, the spacer on the corresponding lever, e.g. L-4, is pushed one unit of distance, causing movement of the corresponding pulley, e.g. P-4, one unit away from alignment with the adjacent pulleys, eg. P-2 and P-6. Where both solenoids of a pair are energized, e.g. M-3 and M-4, the spacers 24 are each carried by levers L-3 and L4 one unit of distance, resulting in limited movement of the pulleys P3 and P-4 away from each other and away from alignment with the remaining pulleys a distance of one unit each. The hook 25 is congurated to permit only one unit of movement regardless of the direction of travel of the spa-cer 24 from the hook edge portion 25a to the edge portion 25h and regardless of whether one or both levers of a pair are being moved.

Cable PC is secured at its anchored end to an anchor 27, 4mounted through an angle bracket 28 and secured by nut 31. Bracket 2S is bolted at 32 to the casing of solenoid M-l. The cable PC extends from its anchored end in a zigzag or tortuous path about pulleys P-1 through P-l() seriatim, and engages the outer portion of each pulley relative to an imaginary center line CL of the array of pulleys, crossing such center line between each two subsequent pulleys so that actuation of each solenoid for moving the corresponding pulley one unit away from the center line CL results in pulling the unanchored end of cable PC into the arrangement of pulleys one increment or unit of lengthwise cable measurement, which is approximately equal to two units of pulley movement. The cable PC extends at its unanchored end about a uumber of cable direction changing pulleys 33, each mounted by a t-hreaded shaft 34 and nut 36 to frame 14 and spaced from frame 14 by a spacer sleeve 35, and around a final direction changing pulley 38 to the computer C where the unanchored end provides a mechanical input for the computer. Direction changing pulley 38 is mounted by bolt 39 and nut 41 to an outward extending flange p0rtion of frame 14. Each pulley of a pair is on an opposite side of center line CL and is in linear alignment with one pulley of each other pair.

In the computer C, the cable PC extends about a plurality of pulleys 44, mounted for free rotation on the frame of computer C. The unanchored end of cable PC then extends around a combination pulley and stepped cam and is secured thereto for rotating cam 45 slightly less than one complete revolution clockwise as viewed in FIG. 1. Stepped cam 45 is provided with a spring return system shown at 45 normally urging cam 45 in a counterclockwise direction against a stop abutment 48.

A pin 47 extends from computer C and is operable by computer C to be moved,during the computation process, into engagement with whichever of the steps of cam 45 is presented to the pin 47 for receiving or measuring a pinfall count of O to 9 transmitted by cable PC. Similar measuring or receipt of pinfall count supplied by a cable or tape and stepped cam arrangement is fully described by the above-identified Cornell et al. application, Ser. No. 366,297.

A pin 51, slidable in slot 52, is also provided for introducing pin count into computer C. Pin 51 is secured t0 cable PC for movement to the left in slot 52 a distance of l to 10 units, one unit for each increment or unit cable PC is pulled and unreeled from cam 45. The computer C receives the mechanical pin count signal, converts the signal to bowling score values and awards the bowling score values to bowlers, in the same manner as described by Cornell et al.

In operation, and especially with reference to the wiring diagram of FIG. 5, the pinsetter, after a pin setup has been bowled against and during a pin detecting cycle, causes respective ones of normally closed switches PDS to open by engaging heads of standing pins at the respective pin positions of the pin setup. The computer then closes a switch MG in the common ground of solenoids M-.l through iM--10` to energize the solenoids correspond-ing to pin positions having pins downed, i.e. where the PDS switches remain closed. Diodes BD are blocking diodes, one associated with eac-h PDS switch, so that each solenoid M can be operated from either of two P DS switches without interaction between the PDS switches and other circuitry associated with the PDS switches. An arc suppressing diode can be provided, as at CD, in parallel with each of solenoids M-1 through M-10. Such arc suppressing diodes prevent generation of high induced voltages across the solenoid contacts, which high voltages could otherwise vcause arcing which would result in reduced life of the solenoid contacts.

Preferably, switch MG is closed by the computer after each ball is rolled and the computer is ready to receive the information so that information is fed to the computer on a ball-byball basis. For example, s-witch MG can be opened to deenergize solenoids M after the computer has assimilated the information by a solenoid such as shown at SMG (FIG. 5). Solenoid SMG is hooked up in the Cornell et al. circuitry of application Ser. No. 366,297 in a manner similar to the Cornell et al. solenoid SPS, which is used by Cornell et al. to initiate the cycle of a totalizer. The same solenoid SMG can be used to close switch MG when information is ready to be fed to the computer and the computer is ready to receive the information.

Referring to FIGS. 1 4, for each solenoid which is actuated, the corresponding pulley P is moved away from the center line CL, thereby pulling cable PC one unit of cable measurement from cam 45. For introducing pin count of 0 to 9, cam 45 has ten steps. When cam 45 is at rest against stop 48, the step representing zero pin count is presented to pin 47. Each subsequent step represents a different pin count of l to 9 in sequence. Cam 45 is configurate-d to present the next subsequent step to pin 47 each time an add-itional unit of cable PC is unreeled therefrom. With no solenoids `M actuated, cam 45 is against stop 48 and the zero pin count step is presented to pin 47. Unreeling one to nine units of cable PC from cam 45 rotates the cam to present the second to tenth steps respectively to pin 47, indicating a pin count of one to nine respectively.

Also, pin 51 can be moved along slot 52 a distance of from one to ten units. Where pin S1 is moved a distance of ten units, the 4computer is notified of a pin count of ten so the computer can set up a strike or spare condition. Thus, for each solenoid M which is actuated, upon closing sw-itch MG, one unit of pin count is introduced into the computation and control unit C.

The combination of cable and pulleys constitutes a differential unit which has a plurality of inputs in the form of the solenoids M, one for each pin position, and which has a common output in the form of the extended or free end of cable PC. For each individual unit of input received at one of the individual solenoids M, a unit of output is added to the common output in the form of cable PC, in the illustrated form, by a shortening of the length of cable extending from the differential unit one unit of length for each solenoid energized.

I claim:

1. An apparatus for counting bowling pinfall from pinfall information available as a plurality of changes in electrical signals, one such change corresponding to the condition of a pin at each of' a plurality of pin positions, which -comprises a differential unit having a single power output including an elongated member movable along its length a number of distinct increments corresponding to the number of pin positions and at least one power input for each pin position connected to said output for moving said member one increment, and motor means for each pin position for actuating the respective power input in response to a change in electrical signal corresponding to a pin condition only at the respective pin position.

2. The apparatus of claim 1 including means for transmitting said power output to a computation means for use of the power output as a pin count signal in the computation of bowling scores.

3. The apparatus of claim 1 wherein each said motor means comprises a power solenoid for driving the respective input and each input is connected to the power output to change the output one additive unit.

4. An apparatus for counting bowling pinfall from pinfall information available as a plurality of changes in electrical signals, one such change corresponding to the condition of a pin at each pin position in a pin setup, which apparatus comprises a differential unit including a single flexible member as a common power output and at least one pulley as a power input for each pin position, means limiting the movement of each pulley a limited distance of one unit, said flexible member being associated with each of said pulleys for moving the flexible member lengthwise an equal amount for each pulley moved one unit, and means for moving each respective pulley one unit responsive to the change in electrical signal corresponding to a pin down condition at the respective pin position.

5. The apparatus of claim 4 wherein said moving means comprises separate means for each pin position for moving the respective pulley in a direction pulling said exible 'member into the apparatus responsive to the change in electrical signal corresponding to a pin down condition.

6. The apparatus of claim 4 wherein said moving means comprises a power solenoid for each pin position for moving the respective pulley said limited distance of one unit.

7. In an apparatus for scoring a bowling game in which pinfall results from the rolling of a 'ball against a pin setup of a plurality of pins and including means for indicating the standing or fallen condition at each pin position of the setup following rolling of the ball, the improvement comprising a differential unit having at least one power input for each pin position, said differential unit including a pulley for each pin position and a flexible member extending around the pulleys, each pulley being mounted for movement between a rest position and a pulling position and pulling the flexible member a distance of one unit when in pulling position relative to rest position, and push solenoid means for each pin position for driving the respective pulley from rest position to pulling position responsive to the pin indicating means for the respective pin position, said flexible member constituting a common power output from the differential unit indicating pin count.

8. An apparatus for receiving pinfall information, totalizing the information and providing a pin count signal, `after bowling of a ball against a pin setup having a plurality of pin positions, which apparatus compri-ses a frame; a plurality of levers, one for each pin position; a plurality of pulleys; a shaft mounting one pulley for rotation on one end of each lever; means at the other end of each lever for engaging the shaft on an adjacent lever and limiting movement of the shaft and pulley; means mounting the plurality of levers on said frame in pairs for independent pivotal movement with the shaft means for each pulley on each lever engaged in the limiting means of the other lever, each pulley of each pair being in linear array with a pulley of another pair to define la pair of parallel linear arrays of pulleys, each lever traversing an imaginary center line midway between said parallel arrays; an elongated cable anchored to said frame at one end and extending from pulley to pulley alternately between said arrays and disposed about the outermost part of each pulley relative to the center line; and motor means for moving each of said pulleys in a direction away from the center line one unit of distance responsive to a pindown condition at the respective pin position.

9. An apparatus for receiving pinfall information, totalizing the information and providing a pin count signal, which apparatus comprises a frame, a plurality of levers, Ione for each pin position, a shaft mounted on one end of each lever, a pulley rotatable on each shaft, means pivotally mounting the plurality of levers on each frame in pairs with each two adjacent pulleys paired, each pulley being offset from each adjacent pulley, means at the ot-her end of each lever for engaging the shaft on the other lever of its pair land limiting movement of the shaft :and pulley thereon in a direction increasing the pulley offset by one unit of distance, a flexible member anchored to said frame at one end, extending into sequential engagement with the furthest offset portions of alternately offset ones of said pulleys and engaging each pulley, means yieldably securing the other end of said flexible member under tension for receiving pin count signals transmitted iby pulling the flexible member a measured increment for each count of a pin, motor means for moving each of said pulleys to increase the pulley offset, whereby actuation of each motor means responsive to a pindown condition pulls one said measured increment of the flexible member into said pulleys against the urging of said resilient means, and means for returning each pulley upon deenergization of the respective motor means.

10. An apparatus for receiving pinfall information, totalizing the information and providing a pin count signal after bowling of a ball against a pin setup having a plurality of Ip-in positions, which apparatus comprises a frame; a plurality of levers, one for each pin position; a plurality of pulleys, one for each pin position; shaft means for each pulley mounting the pulley for rotation on one end of the respective lever; hook means at the other end of each lever larger than said shaft means for engaging one of said shaft means and limiting movement of the shaft means and pulley mounted thereon; means mounting the plurality of levers in pairs on said frame for pivotal movement with the shaft means for each pulley on each lever engage-d in the hook means of the other lever, each pulley of each pair being in linear array with a pulley of another pair to define a pair of parallel linear arrays of pulleys, each lever traversing an imaginary centerline bet-Ween said parallel arrays as it extends from its pulley mounting end to its hook means; a cable anchored at one end to said frame and engaging both pulleys of each pair successively alnog the array of pairs with the cable disposed about the outermost part of each pulley relative to the center line; separate push solenoid means mounted on sa-id frame for pushing each of said levers to pivot and move the pulleys in a direction away from the center line one unit of distance, whereby the cable is pulled into said pulleys an equal incremental distance against the urging of said resilient means for each solenoid energized; and means for returning each pulley upon deenergization of the respective solenoid.

11. An apparatus for scoring a bowling game from pinfall information available as a plurality of changes in electrical signals, one such change corresponding to the condition of a pin at each pin position, which comprises a differential unit having a single mechanical power output and at least one mechanical power input for each pin position connected to said output, electrically responsive means for each pin position for driving the respective power input responsive to the change in electrical signal corresponding to the pin condition at the respective pin positions, and mec-hanical input means connected to said mechanical power output for transmitting pinfall count to a computation means for computing bowling scores from pinfall count supplied by said output.

12. The apparatus of claim 11 wherein said input means of said computation means comprises a slot and a member slidable in the slot and driven along the slot by said power output.

13. The appara-tus of claim 11 wherein said input means of said computation means comprises a member mounted for rotation and driven by said power output, and means for measuring the amount of rotation of said member.

14. An apparatus for scoring a bowling game having a multiplicity of scoring frames in which pinfall occurs from the rolling of at least one bowling ball against a pin setup, comprising:

(a) means for providing pinfall information resulting from the roll of a ball,

(b) an electro-mechanical totaling means connectible to said pinfall information providing means for totaling pinfall information and providing a first ball pin count,

(1) said totaling means including a series of pulleys, one for each pin position of the pin setup, an-d a cable defining `a differential unit,

y(2) means limiting movement of each of said pulleys to a predetermined linear unit of distance, and

l (3) means for moving each of said pulleys for each pin down responsive to pinfall information from said providing means, and (c) means connecting said totaling means to said pro- 15 viding means after each ball is rolled for receiving o (c) flexible tape means for transmitting the pinfall count from the totaling means output to the mechanical means.

16. An apparatus for scoring a bowling game in which a ball is bowled against a pin setup; comprising:

`(a) means for generating a pinfall against each pin downed by bowling of a ball against the pin setup,

(b) a movable input member for receiving pin count information and providing information to a computation unit,

(c) a stepped cam mounted for rotation adjacent said movable input member for limiting movement of said input member a distance defined by the step of the cam presented to said input member, said stepped cam presenting in sequence faces to said input -member permitting movement of said input member as pin count increased by one for each successive face presented,

(d) resilient means urging said cam to a position of zero pin count, and

(e) a differential unit having a plurality of inputs for receiving signals from said lgenerating means, and a common power output including a flexible member extending at one end away from said differential unit and connected to said cam for rotating said cam against the urging of said resilient means a distance corresponding to the number of input signals received.

17. An apparatus for scoring a bowling game in which a ball is bowled against a pin setup, comprising:

(a) means for generating a pinfall signal for each pin downed by bowling of a ball against the pin setup,

(b) mechanical input means mounted for movement and receiving pin count information responsive to the number of units moved for transmitting the information to a comuputation unit, and

(c) a differential unit comprising:

(l) a plurality of pulleys, one for each pin position of the pin setup,

(2) a flexible tape received by all of said pulleys, secured at one end and extending at the other end away from said plurality of pulleys and connected to said mechanical input for moving said mechanical input,

(3) means mounting each of said pulleys for movement a limited distance to vary t-he length of the extension of said exible tape from said plurality of pulleys by one unit of length, equivalent to one unit of movement of said mechanical input, for each pulley moved said limited distance, and

(4) a power solenoid for moving each of said pulleys said limited distance for varying the length of extension of said lleXi-ble tape one unit responsive to each pinfall signal.

18. The apparatus of claim 17 wherein said mechanical input means comprises a slot and a pin secured to said tape and mounted for sliding movement along said slot.

19. The apparatus of claim 17 wherein said mechanical input means comprises a cam and pulley mounted for joint rotation, said cam including a plurality of stepped faces, one for each pin count value and disposed in order of increasing pin count value, and a member mounted for movement toward and away from said cam a dilerent distance depending on the face of said one cam presented to said member.

20. An apparatus for countin-g bowling pinffall from pinfall information available as a plurality of changes in electrical signals, one such change corresponding to the condition of a pin at each of a plurality of pin positions, which comprises a differential unit having a single power output and at least one power input for each pin position connected to said output for changing said output and motor means for each pin position for actuating the respective power input in response to a change in the electrical signal corresponding to a pin condition only at t-he respective pin position, said motor means comprising a powered solenoid for driving the respective input, each input being connected to the power output to change the output one additive unit, and said power output comprising a cable having an accessible portion driven in a pulling direction one increment of length by each of said inputs.

References Cited UNITED STATES PATENTS 2,590,444 -3/ 1952 Millman et al. 3,091,456 5/'1963 Brodie 273-54 3,124,355 3/1964 Mentzer et al 273-54 3,184,583 5/1965 Bawtinheimer 273--54 X ANTON O. QECHSLE, Primary Examiner, 

